Yeah, i have them on my 86 dually.... it was single wheel from the factory and converted by Centurion Lehman. But I agree that they suck..... if......IF..... you have to pull a brake drum, and you will...... you've got 8 lug nuts that have to be removed an eighth turn at a time with a wrench..... it has to be done tediously and systematically over the course of a day.... they are miserable..... i would love to eventually score a real dually differential...... BUYER BEWARE!!! DUALLY EXTENTION THINGS SUCK!!! you've been warned.... my job here is done.....